Description: Sound Output: 110dB( ±5dB ) Powered by: vehicles' electricity -- DC 12V / 3A Frequency: High 510 ± 20Hz , Low 410 ± 20Hz Dimensions : 5 "x 3.5" x 3' Specification: Material: Iron Size:(Approx).110x95x95mm/4.3x3.7x3.7 Inch Package Includes: 2 Pieces HORN 2 Pieces BRACKET 2 Pieces NUT